Heat resistant
A transparent item of a predetermined size that permits unobstructed and undistorted view of a desired area. It may include a frame, have reference markings, grid lines and may be heat strengthened and/or tinted. It is generally used where safety, security, and/or the restriction of foreign matter are required, such as the visual examination of the inside of pressurized tanks, liquid sights, controlled liquid flow, and inspection of equipment enclosed in a housing. See window (as modified); scale, cathode ray tube; scale, plotting; window, metal; window, wood; and window panel, aircraft.
Classification: Pressed or molded glass articles, wired or not, for building or construction;leaded glass windows etc; formed multicellular or foam glass
NSN 5935-01-221-8254
NSN 5935-01-503-2892
NSN 6135-00-112-8637
NSN 6620-00-355-1734
NSN 6130-01-281-6379
NSN 5960-00-521-0221
NSN 5855-01-063-6340
NSN 5935-00-726-2941
NSN 5960-00-228-5985
NSN 6130-01-549-2932
NSN 6150-01-096-5213
NSN 5999-01-512-2146